| AAP | aminoantipyrine |
| AUC | area under the curve |
| BSA | bovine serum albumine |
| Ca2+ | calcium ion |
| Caco-2 cells | colorectal adenocarcinoma cells |
| CaCl2 | calcium chloride |
| CI | confidence interval |
| DCHBS | sodium 3,5-dichloro-2-hydroxybenzenesulfonate |
| Des | desloratadine |
| DMEM | dulbecco’s modified Eagle essential minimum medium |
| EC50 | half effective concentration |
| EDTA | ethylenediaminetetraacetic acid |
| RFU. | relative fluorescence unit |
| Fluo-4 AM | fluorophore-4 acetoxymethyl ester |
| FBS | fetal bovine serum |
| HR | histamine receptor |
| HEPES | 4-(2-hydroxyethyl)-1-piperazine-ethanesulfonic acid |
| Hist | histamine |
| HRP | horseradish peroxidase |
| HV | high voltage |
| H2O2 | hydrogen peroxide |
| IC50 | half inhibitory concentration |
| LC50 | lethal concentration |
| Na2HPO4 | dibasic sodium phosphate salt |
| NaH2PO4 | monobasic sodium phosphate salt |
| SAO | serum amine oxidases |
| SDS-PAGE | sodium dodecyl-sulfate polyacrylamide gel electrophoresis |
| vDAO | vegetal diamine oxidase |
| λExc | excitation wavelength |
| λEm | emission wavelength |